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Light-emitting device and method of manufacturing the same

專利號(hào)
US11996504B2
公開(kāi)日期
2024-05-28
申請(qǐng)人
NICHIA CORPORATION(JP Anan)
發(fā)明人
Shoichi Kashihara; Masanobu Sato; Toshimasa Amiya
IPC分類
H01L33/00; H01L25/075; H01L33/48; H01L33/50; H01L33/54; H01L33/56; H01L33/30; H01L33/62; H01L33/64
技術(shù)領(lǐng)域
light,diffusing,emitting,member,agent,resin,in,silicone,phosphor,surface
地域: Anan

摘要

A light-emitting device 100 includes: a light-emitting element; a light-transmissive member covering the light-emitting element; and a light-diffusing agent contained in the light-transmissive member and comprising hollow particles. The light-transmissive member has a first surface having irregularities according to the light-diffusing agent. The first surface of the light-transmissive member has a convex shape with a height gradually increased from a peripheral portion of the first surface toward a central portion of the first surface.

說(shuō)明書

As shown in FIG. 1C, the first surface of the light-transmissive member 3 includes exposed portions A in which the light-diffusing agent 4 is exposed from the light-transmissive member 3 and covered portions B in which the light-transmissive member 3 covers the light-diffusing agent 4. The light-transmissive member 3 does not necessarily cover the whole light-diffusing agent 4.

The light-diffusing agent 4 is located at the first surface and/or near the first surface of the light-transmissive member 3 to allow the first surface of the light-transmissive member 3 to have irregularities. The light-transmissive member 3 is softer and more impact-resistant than the light-diffusing agent 4.

With this structure, the exposed portions A of the light-diffusing agent 4 is less likely to be damaged. In both of the exposed portions A and the covered portions B, at least a portion of the light-diffusing agent 4 is embedded in the light-transmissive member 3. With this structure, falling off or breakage of fine particles due to impact or the like is less likely to occur in the light-emitting device 100 according to the present embodiment than in a conventional light-emitting device in which fine particles are attached to the first surface of a silicone resin that has already been cured.

權(quán)利要求

1
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